#include "dac.h"

void DAC1_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	DAC_InitTypeDef DAC_InitType;

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE );
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE );	

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;				
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; 		 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	GPIO_SetBits(GPIOA,GPIO_Pin_4);

	DAC_InitType.DAC_Trigger=DAC_Trigger_None;
	DAC_InitType.DAC_WaveGeneration=DAC_WaveGeneration_None;
	DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude=DAC_LFSRUnmask_Bit0;
	DAC_InitType.DAC_OutputBuffer=DAC_OutputBuffer_Disable ;	
	DAC_Init(DAC_Channel_1,&DAC_InitType);	

	DAC_Cmd(DAC_Channel_1, ENABLE);  

	DAC_SetChannel1Data(DAC_Align_12b_R, 0); 

}





















































